XML 91 R77.htm IDEA: XBRL DOCUMENT v3.6.0.2
Loans and the Allowance for Credit Losses - Summary of Impaired Loans (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded $ 41,119 $ 44,931  
Total impaired loans, Unpaid principal balance 49,006 54,119  
Recorded Investment, With no specific allowance recorded 35,148 37,045  
Total impaired loans, Recorded investment 39,430 44,929  
Unpaid Principal Balance, With a specific allowance recorded 7,887 9,188  
Recorded Investment, With a specific allowance recorded 4,282 7,884  
Related Allowance, With a specific allowance recorded 877 1,521  
Average recorded investment, with no related specific allowance 34,741 44,326 $ 45,514
Interest income recognized, With no related specific allowance 460 1,705 1,606
Average recorded investment, With a specific allowance recorded 6,226 9,475 4,870
Interest income recognized, With a specific allowance recorded   292 443
Total impaired loans, Average recorded investment 40,967 53,801 50,384
Total impaired loans, Interest income recognized 460 1,997 2,049
Residential Real Estate [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded 20,152 18,560  
Recorded Investment, With no specific allowance recorded 18,305 16,688  
Average recorded investment, with no related specific allowance 17,021 17,876 18,829
Interest income recognized, With no related specific allowance 308 862 855
Consumer [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded 884 1,603  
Recorded Investment, With no specific allowance recorded 744 1,294  
Average recorded investment, with no related specific allowance 909 1,199 1,122
Interest income recognized, With no related specific allowance 8 105 97
Home Equity [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded 4,589 3,562  
Recorded Investment, With no specific allowance recorded 4,011 3,033  
Average recorded investment, with no related specific allowance 3,502 2,924 2,356
Interest income recognized, With no related specific allowance 20 90 75
Commercial Real Estate - Land and Construction [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded 1,212 2,126  
Recorded Investment, With no specific allowance recorded 766 1,990  
Average recorded investment, with no related specific allowance 993 2,156 1,977
Interest income recognized, With no related specific allowance   41 35
Commercial Real Estate - Improved Property [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded 9,826 14,817  
Recorded Investment, With no specific allowance recorded 8,141 10,559  
Unpaid Principal Balance, With a specific allowance recorded 3,012 3,012  
Recorded Investment, With a specific allowance recorded 3,012 3,012  
Related Allowance, With a specific allowance recorded 470 668  
Average recorded investment, with no related specific allowance 9,128 17,192 17,669
Interest income recognized, With no related specific allowance 115 437 441
Average recorded investment, With a specific allowance recorded 3,012 5,896 2,795
Interest income recognized, With a specific allowance recorded     348
Commercial and Industrial [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance, With no specific allowance recorded 4,456 4,263  
Recorded Investment, With no specific allowance recorded 3,181 3,481  
Unpaid Principal Balance, With a specific allowance recorded 4,875 6,176  
Recorded Investment, With a specific allowance recorded 1,270 4,872  
Related Allowance, With a specific allowance recorded 407 853  
Average recorded investment, with no related specific allowance 3,188 2,979 3,561
Interest income recognized, With no related specific allowance 9 170 103
Average recorded investment, With a specific allowance recorded $ 3,214 3,579 2,075
Interest income recognized, With a specific allowance recorded   $ 292 $ 95